English verb conjugation
COULD JOY

Regular verb: joy - joyed - joyed

Affirmation

Simple form	V-ing form
I could joy you could joy he could joy we could joy you could joy they could joy	I could be joying you could be joying he could be joying we could be joying you could be joying they could be joying
Perfect	V-ing perfect
I could have joyed you could have joyed he could have joyed we could have joyed you could have joyed they could have joyed	I could have been joying you could have been joying he could have been joying we could have been joying you could have been joying they could have been joying

Negation

Simple form	V-ing form
I couldn't joy you couldn't joy he couldn't joy we couldn't joy you couldn't joy they couldn't joy	I couldn't be joying you couldn't be joying he couldn't be joying we couldn't be joying you couldn't be joying they couldn't be joying
Perfect	V-ing perfect
I couldn't have joyed you couldn't have joyed he couldn't have joyed we couldn't have joyed you couldn't have joyed they couldn't have joyed	I couldn't have been joying you couldn't have been joying he couldn't have been joying we couldn't have been joying you couldn't have been joying they couldn't have been joying

Interrogative form

Simple form	V-ing form
could I joy? could you joy? could he joy? could we joy? could you joy? could they joy?	could I be joying? could you be joying? could he be joying? could we be joying? could you be joying? could they be joying?
Perfect	V-ing perfect
could I have joyed? could you have joyed? could he have joyed? could we have joyed? could you have joyed? could they have joyed?	could I have been joying? could you have been joying? could he have been joying? could we have been joying? could you have been joying? could they have been joying?

Interro-negative form

Simple form	V-ing form
couldn't I joy? couldn't you joy? couldn't he joy? couldn't we joy? couldn't you joy? couldn't they joy?	couldn't I be joying? couldn't you be joying? couldn't he be joying? couldn't we be joying? couldn't you be joying? couldn't they be joying?
Perfect	V-ing perfect
couldn't I have joyed? couldn't you have joyed? couldn't he have joyed? couldn't we have joyed? couldn't you have joyed? couldn't they have joyed?	couldn't I have been joying? couldn't you have been joying? couldn't he have been joying? couldn't we have been joying? couldn't you have been joying? couldn't they have been joying?